Stop-motion mechanism.



C. H. RAMSEY.

STOP MOTION MECHANISM.. APPLICATION FILKED MAY 22, 1916.

Patented Mar. 6,1917.

3 SHEETS-SHEET 1 WITNESS.'

0. H. HAMSEY.

STOP MOTION MECHANISM. APPLICATION FILED 'MAY 22, 191e.

Ptented Mar. 6, 1917.y

3 SHEETS-SHEET 2 WITNESS:

c. H. RAMSEY.

STOP MOTION NIFCHANISIVI.`

4 APPLICATION F'ILED MAY 22, 191s. v v 1,218,463. Patented Man, 1917.

v a SHEETS-sneer 3.

i 'Y I l i AWT D sTATEs PATENT OFFICE.

CLIFFORD RAMSEY, OF PATERSON, NEW JERSEY, ASSIGNOR TO JAMES L. MORRISON MACHINE CO., OF PATERSON, NEW JERSEY, A CORPORATION F NEW JERSEY.

STOP-MOTION MEGHANISM.

To all lwhom t may aannam.

Be it known that I, CLIFFORD H. RAMSEY, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Stop-Motion Mechanisms, of which ythe following is a specification.

' In machines known as dye-becks, in-

which fabrics and the like are drawn lengthwise through dyeing or other liquids in a vat by means of a rotating drum, there is employed what is termed a rakef over which the fabrics extend on their way from the liquid in the vat to the drum, the several fabrics, each of'which has its ends fastened together to make it endless and is rolled more or'less into the form of a ropey for the purpose of treatment in the machine, being kept separate by the arms or tines of the rake. Snarls, wads orclumps of the fabric occasionally catch on the rake or some other part around which they extend and stop the progress of the fabric, in consequence of which the samebecomes chafed by the drum unless lits rotation is immediately arrested v by the attendant.

The object of this invention is to provide a reliable and simple means for automati, cally stopping the rotation of the f drum when the fabric from any such cause as that indicated above exerts unusual pressure on the rake; and in accomplishment ofthis object I make the' rake movable under actuaf tion of the fabric and .adapted Ito'factuate means which. controls the rotation of the drum. lconstruct the mechanism so that the resistance to movement o'f the rake may be regulated to suit the ability'of thefabric being treated to stand strains and the like, t

so that when regulated it will not operate until the condition arises upon which its op-v eration is -predicated, and so that when it does operate it shall do so in a way to-certainly and instantly leadto the stopping'of rotation of the drum.

In the accompanying drawings, Figure 1 is a side elevation of a dye-beck embracing my improvements;

Figs. 2 and 3 are vertical sectional views on the lines m-m and y-y, respectively, of

Fig. 1, looking toward the right;

Fig. 4 isa .fragmentary plan view, showingl the principal parts of the stop motion mechanism; v

-. pulley vof they rake.

Fig. 5 is a front elevation of what lis i shown in Fig. 4, excepting that a part of the. -rake is shown in section;

Figs. 6 and 7 are a plan and aside elevation of the rake; and, f v

Figs. 8 and 9'are a side elevation and a sectional view von the line .ef-z in Fig. 8, respectively, of a certain cam.

a is a vat and b uprights bolted to the sides thereof and affording above the vat bearings for'the shaft 0 of the reel or drum of the uprights b andA a bracket e supporting onelend of the shaft, a pulley f and-there is a clutch one member g of which is attached to the pulley and the other member L of which is splined on the shaft.l Around the may extend a driving belt (not shown). 5

The pieces of fabric to bey treated, each having its ends secured together to give it endless form and being rolledinto the shape of a rope, extend around the drum, under a verticalpartition i in the vat and around the rake. The drum rotates in the direction of v the arrow in- Fig. 1.

is equipped at each end with a bracket Z hav- Patented Mar. 6', 191 '7. Applicationledmayaa,191e. lserialivo.99,203- f d. The shaft has loose thereon, between one y ing set into it andsuitably secured therein by a set screw m a `rod a, each bracket and rod forming in effect a bellcrank lever.

The brackets Z afford journals for a roller o x Aarranged above and in a plane parallel with the arms or tines 7c of the rake proper, this being the rollervaround whichfthe'fabrics pass, separated by the arms or tines of the rake proper.; on Aeach ofthe rods ni's a weight p adjustable longitudinally of therod. The rake, thus constructed, is ful-I l .crumed in brackets g upstanding from theI sides of the vat, the fulcra being pins 1 in brackets q entering holes s in the`bra'ckets Z To one -side of the'vat is secured an upstanding bracket t in the .upper endofwhich, Non a horizontalA pinv u parallel with'the side v of the rake, for a purpose to be explained.'

of the vat, isfulcrumed an arm u having a curved cam slot w in a curved projection m of the arm, said arm carrying, adjustable lengthwise thereof, a weight y shaped preferably as a handle. rlhe end 'of cam slot w which is remote from the fulcru'm of the arm approximates (though actually shown as slightly curved) the chord -of a circle having said fulcrum for its center (see Fig. 8). On the side of the bracket 't which adjoins the vat said bracket has a ledge .e on which the adjoining bracket Z of the rake rests in the normal position of the rake. This ledge supports the rake in such a position, with its center 'of gravity somewhat' past the perpendicular through its axis of movement, that the axis of roller 0 is slightly above .the horizontal plane of the fulcrum r In bracket t and a bracket 2 is journaled a horizontal rock shaft 3 carrying at its ends the arms'4 and 5. Arm 4 has a stud 6 engaged in the aforesaid camslot. Arm

' 5 is connected by a link 7 to one end of a fork-lever 8 fulcrumed in bracket 'e and having its fork engaging a peripheral groove in the clutch member it.

Arm c is limited by stud 6 to move from an upright position with its center of gravity somewhat past the perpendicular through its axis of movement (dotted lines, Fig 5) to a substantially horizontal position (full lines, Fig. 5). 'It has an inclined face which overlies bracket Z `of the rake when said arm is inthe upright position and the bracket abuts ledge e'. The train of'parts v, 4--3-5,

said, is slightly curved, approximating the 7, 8 and h, once the arm c is moved from 'the dotted line position past the perpendicular through its axis of'movement, is normally moved (by gravity acting on said arm) to disestablish the clutch, and when arm, v is in the dotted line position it serves to lock said train against such movement.

In the normal position of the parts, the rake rests against stop .2, its arms or tines touching a perforated diaphragm i', Fig. 3 (Which separates from the fabric-receiving or larger part of the vat the part in which the dye materials are introduced) `so as to prevent the fabrics working under the tines; the arm 'v has been turned up past its dead center (z'. e., so that its center of gravity is past the perpendicular through its axs of movement) to the dotted line orlocked position, which movement, through cam :r1-w, has rocked shaft 3 and so shifted the clutch member 7L into engagement with clutch g Vto cause the drum to be driven and thus advance the fabrics through the liquid in the vat. The weights p are adjusted by the attendant so that,without imposing undue strain on the fabrics being treated while they continue in the normal way to be drawn over the roller of the rake, the rake vwill tilt when such an obstruction (as a snarl or clumpy of one of the fabrics) engages the rake as would stop the progress of that fabric if the rake were fixed, or when, if any fabric becomes obstructed at some lother point, as at the partition z', the incidental increased tension on the fabrics causes the rake (Whose roller is then above the horizontal plane o-f the axis of movement of the rake) to be thrown over past the perpendicular through its axis of movement. The limit of movement of the rake is determined by 'contact of its Weights p with the sides of the vat. On the rake being thrown over, its arm Z 'impinges against the face 9 on arm a), of what I term the actuating member fu, y, ai, which is in turn thrown over past its center of gravity, /coming to rest in the approximately horizontal position with the inner end of its cam-slot against stud 6 and incidentally rocking the rocking or actuated member 4, 3, 5, and so, through link 7 and lever 8, disengaging clutch member it from clutch memberg, thus cutting off the power from the drum.

Having cleared the obstruction, the attendant returns the rake to working position and resets the arm fv, thereby restablishing the clutch to start the drum again rotating.

When the rake is thrown over to rest against the sides of the vat (dotted lines, Fig. 1) it stands in inoperativeposition, so that the attendant is warned againststarting up the machine, by returning thev arm u to normal position, until the obstruction has been cleared. A

The part of cam-slot fw which, as aforechord of a circle allows arm o to pass its center of gravity from normal position with a certain lost motion before affecting the rocking structure V3, 4, 5 and the parts 7, 8 and ZL moved thereby, and then to move them quickly when its fall occurs; the'strain on the fabric responsible for the movement of the rake is by this reduced to such as is involved only in moving the arm o past its center of gravity and not the whole train, of parts o, 3-4-5, 7, 8 and h.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. ln a machine for treating fabrics and similar materials with liquids, the combina. tion of a supporting ystructure including a vat, means to advance the material through the vat, movable means for controlling the first means, and, a material-actuated rake over which the material extends movable into impact with and thereupon adapted to actuate the second means.

2. ln a machine for treating fabrics and similar materials with liquids, the combinafirst means, and a pivoted material-actuated rake over which the material extends movable into impact with and thereupon adapted to actuate the second means.

3. In a machine for treating fabrics and similar materials with liquids, the combination of a supporting structure including Aa vat, means to advance the `material through the vat, movable means for controlling the first means, a pivoted material-actuated rake over which the material extends movable 'against and thereupon adapted to move the seflzond means and regulating mea-ns for the ra e.

4. In a machine for treating fabrics and similar materials with liquids, the combination of a supporting structure including a vat, means to advance material throughthe vat, a tiltable rake over which the material extends normally resting with its center of gravity at one sidev of the perpendicular through its axis of tilting movement and adapted to be tilted by the material past said perpendicular, and means, arranged to be engaged by the rake 4after 'it tilts past the perpendicular, for controlling the rst means.

5. In a machine for treating fabrics and similar materials with liquids, the combination of a zsupporting structure including a vat, means to advance material through the yat, means for controlling the first means having a locking member, and a rake lover which the material extends movable against and adapted to release said member. A

6. In a machine fortreating Ifabrics and similar materials with liquids, the combination of a supporting structure including a vat, means to advance material through the vatmeans for controlling the first means having a fulcrumed lockingmember movable over its fulcrum past the perpendicular through said fulcrum to locking position,

. and a rake over which the material extends movable against and adapted to move said member from itslocking position past said perpendicular.

.7. In a machine for. treating fabrics and similar materials with liquids, the combination of a supporting structure including a vat, means to advance material through the vat, means for controlling the first means having a locking member, and materialactuated means to release said member.

8. In a machine for treating fabrics and similar materials with liquids, the combination vof a supporting structure including a vat, means to advance material through the vat, means for controlling the first means having a fulcrumed locking member movable over its fulcrum past the perpendicular through said fulcrumy to locking position,

member from its locking'l position past said perpendicular.

9. In a machine for treating fabrics and similar materials with liquids, the combination of means to advance'material, and controlling means therefor including a inaterialactuated member, and a power-transmitting train including a tilting member movable over and past the perpendicular through its axis of tilting movement to rest position,

the irst-namedl member being movable against and adapted to shift the other mem'- per from rest position past said perpendicul0. In a machine for treating fabrics and" similar materials with liquids, the combination of means to advance material, and controlling means therefor including two tilting members, one movable past the perpendicular through its axis of tilting movement to rest position and the other being materialactuated and movable against'and adapted to shift the first-named memberV p ast said perpendicular.

11. In a machine for treating fabrics and similar materials with liquids, the combination, with means to advance material, of means to control the advance of the material including a supporting structure, a normally moved train of parts including an actuatedmember and a locking actuating `member vconnected together, the latter member being pivoted and having limited movement in one direction past its dead center, and materialin the other direction. p

12. In a machine fortreating fabrics and similar materials with liquids, the combinaactuated means to move said latter member and material-actuated means to move said tion, with means to advance material, of

vat, means to advance material through thel vat, a fulcrumed rake movable over, and past a perpendicular through, its fulcrum to rest position, and movable reversely under pressure of the fabric past said perpendicular, and means, controlled by the rake, for controlling the first means.'

In testimony whereof I affix my signature.

CLIFFORD I-I. RAMSEY. 

